CN101154112A - Fan system and its control device - Google Patents
Fan system and its control device Download PDFInfo
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- CN101154112A CN101154112A CNA2006101415939A CN200610141593A CN101154112A CN 101154112 A CN101154112 A CN 101154112A CN A2006101415939 A CNA2006101415939 A CN A2006101415939A CN 200610141593 A CN200610141593 A CN 200610141593A CN 101154112 A CN101154112 A CN 101154112A
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Abstract
The present invention relates to a control device of fan system and comprises a temperature sensing module, a comparison module and a driving module. The temperature sensing module senses external temperature and generates a sensing signal according to the external temperature; the comparison module receives the sensing signal and outputs a comparison signal according to the sensing signal and a reference voltage signal; the driving module which is electrically connected with the temperature sensing module and the comparison module respectively supplies a working voltage for the temperature sensing module and the comparison module, and also receives the sensing signal or the comparison signal and outputs a rotational speed control signal according the sensing signal or the comparison signal.
Description
Technical field
The present invention relates to a kind of system and control device thereof, particularly a kind of fan system and control device thereof.
Background technology
Because electronic performance and processing speed promote, employed electronic package integrated level improves, so radiating requirements is also big more, wherein a kind of practice is that the installing fan is in electronic installation, in order to dispel the heat.Adjust the rotating speed of fan according to environment temperature by the control device of fan, sensing component in order to sensing temperature, thermal resistor for example, promptly refer to the temperature variation sensitivity, and change the resistor of resistance value along with temperature variation, and can be divided into positive temperature coefficient (PTC) (positivetemperature coefficient according to the association of temperature and resistance value, PTC) with negative temperature coefficient (negative temperaturecoefficient, NTC) two kinds of thermal resistors, PTC themistor is when the temperature resistance value that raises then and then to be increased, and NTC themistor then is that the temperature resistance value that raises descends; Thermal resistor has been widely used in electronic installation now as temperature sensing component, in order to the control and the compensation of circuit.
Please refer to shown in Figure 1, a kind of existing fan system 1 comprises a sensing module 11, one driver module 12 and a motor 13, and this sensing module 11 has a resistor R and a thermal resistor RTH, one termination of this resistor R is received an operating voltage V1 of this driver module 12, the other end is electrically connected with the end of this thermal resistor RTH, and this temperature-sensitive electricity group device RTH is in order to receive and the transfer resistance value according to the variation of an ambient temperature, and with this resistor R with this operating voltage V1 dividing potential drop, and produce a sensing temperature signal S1, and be sent to this driver module 12, this driver module 12 produces a controlling signal S2 according to this sensing temperature signal S1, to control the rotating speed of this motor 13, this sensing temperature signal S1 is a magnitude of voltage.Is a chip at this with this driver module 12, and has a plurality of pin position, and a pin position VREG wherein provides this operating voltage V1, and another pin position VTH is that to receive this sensing temperature signal S1 be example.
Yet, when operating, assembling or this fan system 1 is installed, this fan system 1 is because the influence of vibrations or external force, can cause this thermal resistor RTH to come off or break from this fan system 1, this fan system 1 can not be changed along with this variation of temperature, and promptly this motor 13 continues to keep original rotating speed.If this fan system 1 continues running, then this temperature rises gradually, but this motor 13 is still kept same rotational speed, and then this fan system 1 can be directed at damage because of integral body is overheated, not only reduces fiduciary level and effective utilization, also replaces because of need are normal and promotes use cost.
In order to improve said method,, make the rotating speed of this motor 13 be full speed at present then in when this thermal resistor RTH comes off or breaks; Desire to reach this kind mode, the resistance value that then must select this thermal resistor RTH is 5K Ω for example, and the resistance of this resistor R needs less than 5K Ω, with when this thermal resistor RTH comes off or breaks, then the resistance value because of this resistor R is very little, makes the electric current that flows to this driver module 12 (VTH) enough big, is full speed and make this driver module 12 can produce controlling signal S2 with the rotating speed of controlling this motor 13, the resistance value of this thermal resistor RTH that this kind mode is required is less, so easily restricted in selecting for use.
Please refer to shown in Figure 2, another improvement mode is to change with one 12 volts power supply V2 for should sensing module 11, no matter the resistance value size of this thermal resistor RTH and this resistor R then also can be when this thermal resistor RTH comes off or breaks, the rotating speed of controlling this motor 13 is at full speed.Yet, when this thermal resistor RTH does not come off or breaks, its sensing temperature is low more, resistance value is big more, thus with this resistor R with this power supply V2 dividing potential drop after, the value of this sensing temperature signal S1 that is produced, will be greater than a setting voltage of these driver module 12 inside, the rotating speed that directly causes this motor 13 is at full speed, and the low but rotation speed of the fan of this environment temperature not only wastes energy for situation at full speed, and runs in the opposite direction with original design function.
Therefore, how to provide a kind of can be when the temperature sensing component of fan system be unusual, promptly sensing component comes off or when breaking, is the protection fan system, and makes the rotating speed of motor be to have become one of important topic by fan system and control device thereof at full speed.
Summary of the invention
Because above-mentioned problem, purpose of the present invention for provide a kind of can be when the temperature sensing component of fan system be unusual, promptly sensing component comes off or when breaking, is the protection fan system, and makes the rotating speed of motor be fan system and control device thereof at full speed.
For achieving the above object, comprise a temperature sensing module, a comparison module and a driver module according to a kind of control device of fan system of the present invention.This temperature sensing module senses and foundation one ambient temperature are to produce a sensing signal; This comparison module receives this sensing signal, and compares signal according to this a sensing signal and a reference voltage signal to export one; This driver module is electrically connected with this temperature sensing module and this comparison module respectively, supplies this temperature sensing module and this comparison module a required operating voltage, and receive and according to this sensing signal maybe this comparison signal to export a rotating speed controlling signal.
For achieving the above object, comprise a control device and a motor according to a kind of fan system of the present invention.This control device comprises a temperature sensing module, a comparison module and a driver module; This temperature sensing module senses and foundation one ambient temperature are to produce a sensing signal; This comparison module receives this sensing signal, and compares signal according to this a sensing signal and a reference voltage signal to export one; This driver module is electrically connected with this temperature sensing module and this comparison module respectively, supplies this temperature sensing module and this comparison module a required operating voltage, and receive and according to this sensing signal maybe this comparison signal to export a rotating speed controlling signal.This motor receive and according to this rotating speed controlling signal to control the rotating speed of this motor.
As mentioned above, because of being that a temperature sensing module senses one ambient temperature by this control device is to produce a sensing signal according to a kind of fan system of the present invention and control device thereof, and by a comparison module with this sensing signal and reference voltage signal back output one signal relatively relatively, again by a driver module according to this sensing signal maybe this comparison signal control the rotating speed of a motor.Compare with prior art; fan system of the present invention and control device thereof be this reference voltage signal and this sensing signal relatively; to judge whether this fan system is in normal condition; and in this reference voltage signal during less than this sensing signal; promptly this fan system is an abnormality; then produce a rotating speed controlling signal so that the rotating speed of this motor is full speed; this kind mode except can by this comparison module utilization relatively this reference voltage signal and this sensing signal to judge whether this fan system is the normal condition; also can be when this fan system be in abnormality; the rotating speed of controlling this motor is full speed; so not only protect the overall operation of this fan system, more and then promote the fiduciary level and the effective utilization of this fan system.
Description of drawings
Fig. 1 is a kind of synoptic diagram of existing fan system;
Fig. 2 is the synoptic diagram of another kind of existing fan system;
Fig. 3 is the synoptic diagram according to a kind of fan system of preferred embodiment of the present invention; And
Fig. 4 is the fan system according to preferred embodiment of the present invention, and temperature sensing module and comparison module are a circuit diagram.
The reference numeral explanation:
1,2 fan systems, 11 sensing modules
12 driver modules, 13,22 motors
21 control device, 211 temperature sensing module
2111 sensing components, 212 comparison modules
2121 comparers, 213 driver modules
I1 first input end I2 second input end
0 output terminal R resistor
R1 first resistor R 2 second resistors
R3 the 3rd resistor R 4 the 4th resistor
R5 the 5th resistor S1 sensing temperature signal
S2 controlling signal S3 sensing signal
S4 reference voltage signal S5 is signal relatively
S6 rotating speed controlling signal V1, V3 operating voltage
V2 power supply RTH thermal resistor
Embodiment
Hereinafter with reference to a kind of fan system and the control device thereof of description of drawings according to preferred embodiment of the present invention.
Please refer to shown in Figure 3ly, comprise a control device 21 and a motor 22 according to a kind of fan system 2 of preferred embodiment of the present invention.In present embodiment, this control device 21 has a temperature sensing module 211, a comparison module 212 and a driver module 213.
This temperature sensing module 211 has a sensing component 2111, so can be by the temperature in this sensing component 2111 sensings one external world, produce a sensing signal S3 according to this temperature with conversion again, and this sensing component 2111 and unrestricted, in implementing to can be a thermal resistor, be to be that negative temperature coefficient (NTC) thermal resistor is an example with this thermal resistor at this; In addition, S3 is also unrestricted for this sensing signal, can be a magnitude of voltage at this.
This comparison module 212 has a comparer 2121, and it is electrically connected with this temperature sensing module 211; This comparer 2121 has a first input end I1, one second input end I2 and an output terminal 0, this comparison module 212 receives a reference voltage signal S4 by this first input end I1 of this comparer 2121, this second input end I2 receives this sensing signal S3, this comparer 2121 is the size of the value of this sensing signal S3 and this reference voltage signal S4 relatively, and according to result relatively in this output terminal 0 output one signal S5 relatively; In this enforcement, this reference voltage signal S4 is also unrestricted, be a magnitude of voltage on implementing, and this comparer 2121 is also unrestricted, can be an operational amplifier, and this comparison signal S5 can be a noble potential signal or an electronegative potential signal on implementing.
This driver module 213 has a first end, a second end and one the 3rd end, and this driver module 213 is also unrestricted, can be a microprocessor or a chip, this driver module 213 has a plurality of pin position, in the enforcement, this first end is VTH pin position, and this second end is RMI pin position, and the 3rd end then is a VREG pin position.In present embodiment, this driver module 213 is electrically connected with this temperature sensing module 211 and this comparison module 212 respectively, so that this first end receives this sensing signal S3, this the second end receives this comparison signal S5, and according to this sensing signal S3 maybe this comparison signal S5 to export a rotating speed controlling signal S6.In addition, this driver module 213 is to produce an operating voltage V3 by the 3rd end, in order to supply this temperature sensing module 211 and this comparison module 212.In addition, under normal condition, this reference voltage signal S4 needs less than this operating voltage V3.
In addition, in this driver module 213 of present embodiment, when this second end when receiving this relatively signal S5 be this electronegative potential signal, then can make the circuit ground of this second end inside, turn round at full speed and make this rotating speed controlling signal S6 control this motor 22.
Please refer to shown in Figure 4ly, this temperature sensing module 211 of present embodiment comprises one first resistor R 1 and a sensing component 2111; One termination of this first resistor R 1 is received this operating voltage V3 of this driver module 213, and an end of this sensing component 2111 is electrically connected with the other end of this first resistor R 1, produces this sensing signal S3 with conversion, and the other end of this sensing component 2111 is ground connection then.
This comparison module 212 comprises a comparer 2121, one second resistor R 2, one the 3rd resistor R 3, one the 4th resistor R 4 and one the 5th resistor R 5; And this comparer 2121 has a first input end I1, one second input end I2 and an output terminal 0, and the manner of comparison of this comparer 2121 of present embodiment and result describe in detail in the foregoing description, so also repeat no more.In circuit shown in this figure, a termination of this second resistor R 2 is received this operating voltage V3, and its other end is electrically connected with this first input end I1; One end of the 3rd resistor R 3 is electrically connected with this first input end I1 to produce this reference voltage signal S4, its other end ground connection; One termination of the 4th resistor R 4 is received this operating voltage V3, and its other end is electrically connected with this output terminal 0; One end of the 5th resistor R 5 is electrically connected its other end ground connection with this other end and this output terminal 0 of the 4th resistor R 4.This of present embodiment second resistor R 2 and the 3rd resistor R 3 in order to this operating voltage VREG dividing potential drop producing this reference voltage signal S4, and the 4th resistor R 4 and the 5th resistor R 5 in order to the signal dividing potential drop of these comparer 2121 outputs to produce this comparison signal S5.
Referring again to Fig. 3 and shown in Figure 4, in present embodiment, this motor 22 receives this rotating speed controlling signal S6, and controls the rotating speed of this motor 22 according to this rotating speed controlling signal S6.
Referring again to shown in Figure 4, the action of this fan system 2 is as follows: when this fan system 2 during in normal condition, promptly this sensing component 2111 is not subjected to any external force and disconnects or when getting loose, this sensing component 2111 is from this temperature of extraneous sensing, and utilize this first resistor R 1 and these sensing component 2111 dividing potential drops to produce this sensing signal S3 with conversion, this temperature sensing module 211 is also delivered to this driver module 213 and this comparison module 212 respectively with this sensing signal S3, and this operating voltage V3 dividing potential drop that this second resistor R 2 of this comparison module 212 and the 3rd resistor R 3 are provided this driver module 213, to produce this reference voltage signal S4, this comparer 2121 receives this reference voltage signal S4 by this first input end I1, this second input end I2 receives this sensing signal S3, with the size of the value of this reference voltage signal S4 and this sensing signal S3 relatively, because this reference voltage signal S4 of this fan system 2 is greater than this sensing signal S3 and less than operating voltage V3, then this compares signal S5 to this comparer 2121 in output terminal 0 output, and deliver to this driver module 213 after utilizing the 4th resistor R 4 and the 5th resistor R 5 dividing potential drops, and according to the characteristic of this driver module 213, under this state, this driver module 213 is only according to the size of the value of this sensing signal S3, to produce the rotating speed that this rotating speed controlling signal S6 controls this motor 22.
And when this sensing component 2111 breaks for some reason or gets loose, the value of this sensing signal S3 that this operating voltage V3 obtains after via this first resistor R 1, almost identical with this operating voltage V3, so the time this reference voltage signal S4 less than this sensing signal S3, this comparer 2121 is the electronegative potential signal in output terminal 0 this comparison signal of output S5, and according to the characteristic of this driver module, this moment, this driver module 213 only produced this rotating speed controlling signal S6 according to this comparison signal S5, to control this motor 22 full-speed operations.
Because this fan system 2 is by this comparison module 212 of this control device 21 size of this reference voltage signal S4 and this sensing signal S3 value relatively, with in this reference voltage signal S4 during greater than this sensing signal S3 and less than operating voltage, be general state, control the rotating speed of this motor 22 by this driver module 213 according to this sensing signal S3 to produce this rotating speed controlling signal S6; Or when this sensing component 2111 came off or breaks, this reference voltage signal S4 was less than this sensing signal S3, and by this driver module 213 according to this comparison signal S5 to control this motor 22 full-speed operations.
This kind mode; not only can be by this comparison module 212 size of this reference voltage signal S4 and this sensing signal S3 value relatively; to judge whether this sensing component 2111 comes off or break; also can come off or break in this sensing component 2111; and can not this temperature of sensing the time; the also unaffected and full-speed operation of this motor 22 of this fan system 2, thus the overall operation of this fan system 2 not only protected, more and then promote the fiduciary level and the effective utilization of this fan system 2.
In sum, a kind of fan system of the present invention and control device thereof by the temperature in a temperature sensing module senses one external world of this control device to produce a sensing signal, and a reference voltage signal that is had with comparison module back output one signal relatively relatively, again by a driver module according to this sensing signal maybe this comparison signal control the rotating speed of a motor.Compare with prior art; fan system of the present invention and control device thereof be this reference voltage signal and this sensing signal relatively; to judge whether this fan system is in normal condition; and in this reference voltage signal during less than this sensing signal; promptly this fan system is an abnormality; then produce a rotating speed controlling signal so that the rotating speed of this motor is full speed; this kind mode except can by this comparison module utilization relatively this reference voltage signal and this sensing signal to judge whether this fan system is the normal condition; also can be when this fan system be in abnormality; the rotating speed of controlling this motor is full speed; so not only protect the overall operation of this fan system, more and then promote the fiduciary level and the effective utilization of this fan system.
The above only is an illustrative, but not is limitation of the present invention.Anyly do not break away from spirit of the present invention and category, and, all should be contained in the claim of the present invention its equivalent modifications of carrying out or change.
Claims (20)
1. control device of fan system comprises:
One temperature sensing module, sensing and foundation one ambient temperature are to produce a sensing signal;
One comparison module receives this sensing signal, and compares signal according to this a sensing signal and a reference voltage signal to export one; And
One driver module is electrically connected with this temperature sensing module and this comparison module respectively, supplies this temperature sensing module and this comparison module a required operating voltage, and receive and according to this sensing signal maybe this comparison signal to export a rotating speed controlling signal.
2. control device as claimed in claim 1, wherein this sensing signal is a magnitude of voltage.
3. control device as claimed in claim 1, wherein this comparison signal is a noble potential signal or an electronegative potential signal.
4. control device as claimed in claim 3, wherein when this reference voltage signal was greater than or less than this sensing signal, this compares signal was this noble potential signal or this electronegative potential signal.
5. control device as claimed in claim 4, wherein the voltage of this reference voltage signal is less than this operating voltage.
6. control device as claimed in claim 1, wherein this temperature sensing module has a sensing component or a thermal resistor, produces this sensing signal by this sensing component or this thermal resistor sensing and according to this ambient temperature with conversion.
7. control device as claimed in claim 1, wherein this temperature sensing module comprises:
One first resistor, the one termination is received this operating voltage; And
One sensing component, one end are electrically connected with the other end of this first resistor with conversion and produce this sensing signal, its other end ground connection.
8. control device as claimed in claim 1, wherein this comparison module has a comparer or an operational amplifier, this comparer or this operational amplifier have a first input end, one second input end and an output terminal, this first input end receives this reference voltage signal, this second input end receives this sensing signal, this comparer or this operational amplifier be this reference voltage signal and this sensing signal relatively, to export this comparison signal in this output terminal.
9. control device as claimed in claim 1, wherein this comparison module comprises:
One comparer has a first input end, one second input end and an output terminal, and this second input end receives this sensing signal, and this output terminal is exported this comparison signal;
One second resistor, the one termination is received this operating voltage, and its other end is electrically connected with this first input end;
One the 3rd resistor, one end are electrically connected with this first input end to produce this reference voltage signal, its other end ground connection;
One the 4th resistor, the one termination is received this operating voltage, and its other end is electrically connected with this output terminal; And
One the 5th resistor, the one end is electrically connected its other end ground connection with this other end and this output terminal of the 4th resistor.
10. control device as claimed in claim 1, wherein this driver module is a microprocessor or a chip.
11. a fan system comprises:
One control device, comprise a temperature sensing module, a comparison module and a driver module, the temperature in this temperature sensing module senses and foundation one external world is to produce a sensing signal, this comparison module receives this sensing signal, and compare signal to export one according to this a sensing signal and a reference voltage signal, this driver module is electrically connected with this temperature sensing module and this comparison module respectively, supply this temperature sensing module and this comparison module a required operating voltage, and receive and according to this sensing signal maybe this comparison signal to export a rotating speed controlling signal; And
One motor, receive and according to this rotating speed controlling signal to control the rotating speed of this motor.
12. fan system as claimed in claim 11, wherein this sensing signal is a magnitude of voltage.
13. fan system as claimed in claim 11, wherein this comparison signal is a noble potential signal or an electronegative potential signal.
14. fan system as claimed in claim 13, wherein when this reference voltage signal was greater than or less than this sensing signal, this compares signal was this noble potential signal or this electronegative potential signal.
15. fan system as claimed in claim 14, wherein the voltage of this reference voltage signal is less than this operating voltage.
16. fan system as claimed in claim 11, wherein this temperature sensing module has a sensing component or a thermal resistor, produces this sensing signal by this sensing component or this thermal resistor sensing and according to this temperature with conversion.
17. fan system as claimed in claim 11, wherein this temperature sensing module comprises:
One first resistor, the one termination is received this operating voltage; And
One sensing component, one end are electrically connected with the other end of this first resistor with conversion and produce this sensing signal, its other end ground connection.
18. fan system as claimed in claim 11, wherein this comparison module has a comparer or an operational amplifier, this comparer or this operational amplifier have a first input end, one second input end and an output terminal, this first input end receives this reference voltage signal, this second input end receives this sensing signal, this comparer or this operational amplifier be this reference voltage signal and this sensing signal relatively, to export this comparison signal in this output terminal.
19. fan system as claimed in claim 11, wherein this comparison module comprises:
One comparer has a first input end, one second input end and an output terminal, and this second input end receives this sensing signal, and this output terminal is exported this comparison signal;
One second resistor, the one termination is received this operating voltage, and its other end is electrically connected with this first input end;
One the 3rd resistor, one end are electrically connected with this first input end to produce this reference voltage signal, its other end ground connection;
One the 4th resistor, the one termination is received this operating voltage, and its other end is electrically connected with this output terminal; And
One the 5th resistor, the one end is electrically connected its other end ground connection with this other end and this output terminal of the 4th resistor.
20. fan system as claimed in claim 11, wherein this driver module is a microprocessor or a chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101415939A CN101154112B (en) | 2006-09-30 | 2006-09-30 | Fan system and its control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101415939A CN101154112B (en) | 2006-09-30 | 2006-09-30 | Fan system and its control device |
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| Publication Number | Publication Date |
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| CN101154112A true CN101154112A (en) | 2008-04-02 |
| CN101154112B CN101154112B (en) | 2011-01-12 |
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| CN2006101415939A Active CN101154112B (en) | 2006-09-30 | 2006-09-30 | Fan system and its control device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169354A (en) * | 2011-02-17 | 2011-08-31 | 浪潮(北京)电子信息产业有限公司 | Control method and device of cooling system |
| CN104929923A (en) * | 2015-06-02 | 2015-09-23 | 常州市巍纳赛电子科技有限公司 | Fan detection system of jacquard |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2731151Y (en) * | 2004-09-29 | 2005-10-05 | 联想(北京)有限公司 | Temperature controlled fan |
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2006
- 2006-09-30 CN CN2006101415939A patent/CN101154112B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169354A (en) * | 2011-02-17 | 2011-08-31 | 浪潮(北京)电子信息产业有限公司 | Control method and device of cooling system |
| CN104929923A (en) * | 2015-06-02 | 2015-09-23 | 常州市巍纳赛电子科技有限公司 | Fan detection system of jacquard |
| CN104929923B (en) * | 2015-06-02 | 2018-03-09 | 常州市巍纳赛电子科技有限公司 | A kind of fan detection system of jacquard |
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| Publication number | Publication date |
|---|---|
| CN101154112B (en) | 2011-01-12 |
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